Large-diameter CdTe or CdZnTe polycrystalline rod synthesis apparatus and preparation method thereof

A technology of polycrystalline rods and synthesis devices, which is applied in the growth of polycrystalline materials, chemical instruments and methods, and single crystal growth, can solve the problems of unsuitability for large-scale production, complex synthesis methods, and high costs, and prevent secondary less pollution, easy to manufacture, and lower mass production cost
CN103409800AActive Publication Date: 2013-11-27WUHAN GAOXIN TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN GAOXIN TECH
Publication Date
2013-11-27

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Abstract

The invention discloses a large-diameter CdTe or CdZnTe polycrystalline rod synthesis apparatus and a preparation method thereof. The apparatus is characterized in that an aspirating hole is arranged at the bottom of a graphite crucible, a graphite pad is placed at the bottom of the graphite crucible, a graphite cover is positioned at the mouth of the graphite crucible, the whole graphite crucible is placed in a quartz crucible and has a corresponding gap with a quartz plug, and the quartz plug is positioned at the mouth of the quartz crucible. The quartz crucible and the quartz plug are sealed through welding by adopting oxyhydrogen flame; the obtained quartz crucible is sent to a synthesis furnace and is heated to realize a raw material synthesis technology in order to prepare CdTe or CdZnTe polycrystalline rods; and the graphite crucible is completely sealed in the quartz crucible to make the solid material in graphite crucible in a high vacuum state at normal temperature, so the violent release and the heat impact of latent heat in a raw material mixture chemical-combination process can be effectively born during the heating synthesis, the frequent-appearing quartz crucible explosion or cracking event is completely avoided in the highly-pure raw material mixture synthesis process, and the highly pure graphite crucible can be repeatedly used, thereby the batch production cost is reduced.
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Description

technical field

[0001] The invention belongs to the field of semiconductor material preparation, and in particular relates to a large-diameter cadmium telluride (CdTe) or cadmium zinc telluride (CdZnTe) polycrystalline rod synthesis device and preparation method. Background technique

[0002] CdTe and CdZnTe crystal materials can be used to make high-performance X-ray and γ-ray detectors due to their high resistivity and good carrier transport characteristics, and have broad application prospects in the fields of high-energy physics and medical imaging; they can also be used to make low- Low-cost CdTe thin-film solar cells require polycrystalline synthetic materials and CdTe targets; not only that, but its lattice constant matches the infrared detector material mercury cadmium telluride (HgCdTe), which is the most ideal epitaxial substrate for mercury cadmium telluride crystal materials , plays an indispensable role in modern infrared detector technology.

[0003] In the pr...

Claims

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